This phone was installed with Jailbroken (as it has Cydia and iFile with it) and it's so slow when turning on the phone.

The bottom of the lock screen has a phone number which belongs to Apple Security support. This means this device is confidential and looks like prototype device/development board to me.

The SIM card cannot be used when inserting the SIM card which means you cannot use data, call or text.

This Apple iPhone 4 Prototype comes with a bunch of testing apps and comes with iOS 7.0. It has a 3.5 inch screen size, 5.0 MP camera resolution, and a storage capacity of 8 GB. The phone is unlocked, has Bluetooth, Wi-Fi, and dock connector connectivity, and runs on a single-core processor with 512 MB of RAM.

The model number is A1332 (Gsm Only) and the phone is black in colour. It is a bar-style phone and has built-in memory. The operating system is iOS and the phone is categorised under Mobile Phones & Communication and Mobile & Smart Phones.